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Article

Multiblock Analysis Applied to TD-NMR of Butters and Related Products

1
INRAE, ITAP, Montpellier SupAgro, University of Montpellier, F-34096 Montpellier, France
2
ChemHouse Research Group, F-34096 Montpellier, France
3
INRAE, UR OPAALE, 17 Avenue de Cucillé, CS 64427, F-35044 Rennes, France
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(15), 5317; https://doi.org/10.3390/app10155317
Received: 4 June 2020 / Revised: 22 July 2020 / Accepted: 27 July 2020 / Published: 31 July 2020
(This article belongs to the Special Issue Application of Spectroscopy in Food Analysis)
This work presents a novel and rapid approach to predict fat content in butter products based on nuclear magnetic resonance longitudinal (T1) relaxation measurements and multi-block chemometric methods. The potential of using simultaneously liquid (T1L) and solid phase (T1S) signals of fifty samples of margarine, butter and concentrated fat by Sequential and Orthogonalized Partial Least Squares (SO-PLS) and Sequential and Orthogonalized Selective Covariance Selection (SO-CovSel) methods was investigated. The two signals (T1L and T1S) were also used separately with PLS and CovSel regressions. The models were compared in term of prediction errors (RMSEP) and repeatability error (σrep). The results obtained from liquid phase (RMSEP 1.33% and σrep 0.73%) are better than those obtained with solid phase (RMSEP 5.27% and σrep 0.69%). Multiblock methodologies present better performance (RMSEP 1.00% and σrep 0.47%) and illustrate their power in the quantitative analysis of butter products. Moreover, SO-Covsel results allow for proposing a measurement protocol based on a limited number of NMR acquisitions, which opens a new way to quantify fat content in butter products with reduced analysis times. View Full-Text
Keywords: TD-NMR; T1 relaxation; chemometrics; multiblock; SO-PLS; SO-Covsel; butter TD-NMR; T1 relaxation; chemometrics; multiblock; SO-PLS; SO-Covsel; butter
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MDPI and ACS Style

Roger, J.-M.; Garcia, S.M.; Cambert, M.; Rondeau-Mouro, C. Multiblock Analysis Applied to TD-NMR of Butters and Related Products. Appl. Sci. 2020, 10, 5317. https://doi.org/10.3390/app10155317

AMA Style

Roger J-M, Garcia SM, Cambert M, Rondeau-Mouro C. Multiblock Analysis Applied to TD-NMR of Butters and Related Products. Applied Sciences. 2020; 10(15):5317. https://doi.org/10.3390/app10155317

Chicago/Turabian Style

Roger, Jean-Michel, Silvia M. Garcia, Mireille Cambert, and Corinne Rondeau-Mouro. 2020. "Multiblock Analysis Applied to TD-NMR of Butters and Related Products" Applied Sciences 10, no. 15: 5317. https://doi.org/10.3390/app10155317

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